Single-trigger mechanism for firearms.



3 9 9 2 C B D E T N E T A P G. G. CLI SINGLE TRIGGER MEOHAN ISM FOR FIREARMS. APPLIOATION FILED MAR. 5, 190a.

2 SHEETS-SHEET-l.

N0 MODEL No. 748,263. 'PATENTED 330.129, 1903.

4 G. 0. GLINE.

SINGLE TRIGGER MECHANISM FOR FIREARMS.

v APPLICATION FILED MAR. 5, 1903., no MODEL,

UNITED STATES Patented December 29, 1903.

PATENT OFF CE.

GEORGE G. CLINE, OFIBATAVIA, NEW.YORK.

SPECIFICATION formingpart of Letters Patent No. 748,263, dated December 29, 1903. 7

Application filed March 5, 1993- Serial No. 146,360. (No model.)

To all whom it may concern.- Be it known that I, GEORGE O.'OL1NE,a citi zen of the United States, residing'atBatavia, in the county of Genesee and State of New York, have invented new and useful Im provements in Single-Trigger Mechanism for Firearms, of which the following is a specification.

This invention relatesto a trigger mechanism for double-barrel firearms of that kind in which by means of a single trigger the barrels These guns are further objectionable, for the reason that they are apt to he accidentally discharged in setting the mechanism to fire one barrel repeatedly orboth barrels alternately.

The object of the invention is to provide a desirable single-trigger mechanism of very simple, strong, and inexpensiveconst'ruction which can be applied at small cost to doubleba'rrel' firearms of known construction and which is free from the objections above noted.

In-the accompanying drawings, consisting of two sheets, Figure l is a longitudinal verticalsection through the breech and lock of a firearm provided with a single-trigger mechanism embodying the invention.

ger mechanism in plan with the parts in the position they occupy for discharging the'barrels alternately and after theright-hand barrel has been fired. Fig- 3 is a fragmentary.

Fig. 2 is a, horizontal section thereof, showing the trigsectional elevation showing the right-hand striker and associated parts. Fig. 8 is a section in line 8 8, Fig. 7.

Like letters of reference refer to like parts in the several figures.

The drawings showthe improvements ap plied to a hammerless gun, for which they'are more especially intended.

a a represent, respectively, the right and left hand strikers or hidden hammers for op- 'erating the firing-pins of the two barrels; b b, the sears controlling the right and left hand strikers; b the sear-springs; c, the operatingsprings for the strikers, and d the cocking-lever, which is operatedto raise or cook the strikers when the gun is broken at the breech for"the purpose of loading. These parts are constructed, arranged, and operate in a wellknown manner and are not specifically described herein. The seals are. provided at their rear ends with lateral arms or portions e e, which extend toward and into'close proximity to each other.

' F represents the single trigger, which is arranged centrally of the lock and is pivoted at its forward end by a pin f von a pivot-block f, rising from the trigger-plate f ger has a body portion which extends rearwardly beneath the lateral arms of the scars and the usual curved finger-piece. The bottom face of. the body of the trigger in the normal position of the latter is substantially parallel with the bottom face of the'trigger-plate, sothat the bottom face of the trigger-body is horizontal or, inclines downwardly from its ;rear end when the trigger is pulled to fire the gun, The purpose of thus forming the trigger is to preventthe accidental discharge of the second barrel of the gun, as hereinafter explained.

G represents an adjustable block which is of the trigger and which is hereinafter termed the change block. In the construction shown the trigger is provided with. alougitudinal slot g, and the change-block, which is of substantiaiiy inyertcd-U shape in crosssection and straddles the trigger, is slidably held on the trigger by pins or screws y, secured to the block-and passing through the slot of the trigger. The change-block is promounted to move longitudinally on the body The trig-- vided with an operating finger-piece H, which is connected to a part of the block extending down through a slot in the trigger-plate and is adjacent to and substantially beneath the 5 pivot for the trigger. By means of this finger-piece the change-block can be moved forwardly or rearwardly on the trigger. The block is held in the position to which it is moved on the trigger'by suitable means, such to as a flat spring 7L, secured to the block and havingits front end downturned, so as to engage in either of two shallow notches or depressions h in the top face of the trigger.

I represents a tripping device or lever for the sears'of the right and left hand strikers. This lever consists of a front section which is pivoted nearits front end on an upright pivot '21, secured to the pivot-block for the trigger, and a rear section or tailpiece I, which is pivoted to the front section to swing vertically. The tripping-lever is provided with an opening through which the bolt or screw I connecting the top and trigger plates of the 1 look passes, so that the bolt does not interferewith' the laterally-swinging movement of the tripping-lever. The rear end of the tailpiece of the tripping-leveris arranged to rest and swing laterally beneath the lateral arms of the sears on a laterally-extended horizon- 50 talface k on the change-block. A spring 1,

of any suitable character, is provided,, that shown being a coiled spring surrounding the pivot for the tripping-lever, which tends to normally move the front end of the lever to the right and swing the rear end of the tailpiece of the tripping-lever to the left beneath the lateral arm of the left-hand sear.

M represents a laterally-movable device,

preferably a bolt, which is mounted to slide 0 horizontally in a bearing m, carried by the stationary frameplate on which the righthand striker is pivoted. The inner end of the bolt M is arranged opposite to and bears against the front end of the tripping-lever,

while the outer end projects through the frame-plate into the path of-a cam or inclined face m on the right-hand striker. (See Figsr 7 and 8.) The bolt is normally projected outward in the path of the inclined face on the striker by the spring for the trippinglever, so that when the right-hand hammer is raised the bolt is moved horizontally in- 'ward and the front end of the tripping-lever .is moved to the left and its tailpiece to the right beneath the lateral arm of the righthand sear, as shown in Fig. 3. If the trigger is now pulled to fire the .gun, its rear end and the change-block thereon will be lifted andraise the tailpiece of the trippinglever,

Whichbeing beneaththe right-hand sear will raise the latter and trip the right-hand striker, thus discharging the right-hand barrel of the gun. When the right-hand hammer is thrown forwardly, the inclined face thereon moves forward and permits the spring for the tripping-lever to move the front end of the trip- Mazes right to carry the 'tailpiece of the tripping lever to the left beneath the lateral arm of the left-hand sear. If the trigger is now pulled a second time, the tailpiece of the tripping-lever will be raised and will operate the left-hand sear to trip the left-hand striker, thus firing the left hand barrel. When the breech is opened to reload the gun, the inclined face on the righthand striker I again engages the operating-bolt for the tripping-lever and throws the tailpiece of the same beneaththe right-hand sear. With the parts operating as described the two barrels of the gun will be fired alternately, the right-hand barrel always being first to be discharged.

In firing a gun the finger is almost invari ably retained on the trigger, and in many double-barrel single trigger guns when the barrel the trigger is released sufficiently for the tripping device to move into operative wa/rdly on the bottom face of the trigger and holds the latter up, so that the tail .of the gun recoils upon the discharge of the first tripping-lever cannot engage under the lefthand searuntil the gun is returned -to its forward position or, the, trigger is purposely released by the removal of pressure thereon. Thus the recoiland consequent forward movement of the gun or the intentional release of .the trigger .must take place before the trip ping-lever is in position to trip the left-hand scar, and the recoil of the gun will not cause the accidental discharge of the second barrel. As the tailpiece of the tripping-lever is always thrown beneaththe right-hand sear by opening the breech and raising the hammers, it will be obvious that after the right-hand barrel has been discharged if the breech is again opened and the right-hand barrel reloaded and the breech closed the tripping-lever will again be in position to fire the right-hand barrel. fired continuously or repeatedly by reloading after each pull of the trigger.

When it is desired to fire the left-hand bar- Thus the right-hand barrel can be rel first or successively, the operator pushes the change-block forward on the trigger by means of the finger-piece until the spring on the change-block engages in the front notch in the top face of the trigger. The forward movement of the changeblock carries the horizontal face It forwardly from beneath the rear end of the tailpiece ofthe tripping-lever opposite to a notch or cavity'n in the bottom face of the tailpiece, so that when the trigger is raised the face k of the change-block will not engage or lift the tailpiece. The changeblock is provided at the left-hand side of its rear end with an upright projection or portion N, which when the block is moved for- -ward is carried forward beneath the lateral arm of the left-hand sear, as shown in Figs. 3 and 4. In.ihis position of the change-block the lateral arm of the right-hand sear: If

the trigger is now pulled, the projection N on ['O the change-block will lift the left-hand searand trip the left-hand striken; but the tailpiece of the tripping-leverwill not be raisedon account of the face loot the change-block entering the notch inthe tailpiece of the tripl-5 ping-lever. The lefthand striker only is tripped,.therefere,' and the left-hand barrel of the gun discharged. So long as the changeblock is in its forward position the tailpiece of 'thetrip-lever will be prevented by the upright projection N of the change-block from swinging to the left. Solong'as the changeblock remains in its forward position the lefthand barrel only of the gun will be fired. When the change-block is again moved rearvwardly, the projection N thereon is moved from beneath the left-hand sear and the horizontal face k of the change-block is returned to a position beneath the rear end'of the tailpiece, so that when the trigger is next pulled the right-hand striker will be tripped and the right-hand barrel fired. As the operating.

finger-piece for thechange-block is located at thefront end of the trigger or beneath the pivot-pin for the latter, itis impossible to ac- .cidentally discharge the gun by moving the change-block forward, becanse the. forward pressure on the fingerpiece tends to swing the trigger downwardly instead of upwardly. The change-block can be returned to its rear 0 position when the breech is opened for load? ing, and thus'there is no danger of accidentally discharging the gun in moving the change-block rearwardly.

The single-trigger mechanism herein de- 5 scribed is alsoapplicable to firearms having.

the exposed hammers, in which case the strikers a vor, will constitute the hammer-tum blers. a

I claim as my invention 1. The combination with the sears, a trigge ga movable tripping device, means for moving said tripping device into operative relation to one of said: sears, and means for moving said tripping device into operativere 5 Iation to theother sear, of an'adjnstable change. device connectedto the trigger and which in one position of the same operates said tripping device to trip the sear with which it stands inoperative relation, and in-another 6 position of 'thesarnelactuatesone of said sears -=independently of saidjtripping device,. s.u b-

stantially as set forth. 2. Thecombination with. the sears, a:tri'g-- ger, a movable trippingdevice, means for 5 movingsaid tripping device ,into operative relation to one of said sears, .and neans'forthe tailpiece of the tripping-lever is beneath moving said tripping device into operative relation to the other sear, of an adjustable change-block carried by the trigger and havinga part which in one position of said change device engages and operates said tripping dewhich in another positionof said change deindependently of said tripping'device, substantially as set forth.

3. The combination with the sears, a trigtrigger and said sears and-provided with a -notch, and mechanism for moving said tription to said sears, of an adjustable changewith a part which in one position of said block engages and moves said trip'pingidevice to trip said sears, and in another position of said change-block is opposite to saidnotch in which. inthe second-mentioned position of said block engages and actuates one of said sears independently of said tripping device, substantially as set forth.

4. The combination with the sears, a trig- I ger, alaterally-swinging tripping-lever provided with a. verticallymovable tailpiece which is located between said trigger and said sears and is provided with a notch in its under -side, and mechanism for moving said alternately into operative relation to said by said trigger and provided with a part which in one position of said change-block ping-lever, and which in another position of said change-block is opposite to said notch in the tailpiece of the. tripping-lever,-and a projection on said change-block which in the second-mentioned position of the block is adapted to engage one of said sears to operate the same independentlyof said tailpiece of the tripping-lever, substantially as set forth.

. ger, a movable tripping device and mechan ism for moving said'tripping device alternately into operative relatiou 'te said sears, of an adjustable change-block s'lidably secured to said trigger and provided with a part 'Whichinone position of said change-block moves said tripping device to operate said sears, and having a part which in another position of said change-block actnates one of said sears independently of said tripping de- 'vic,e', and an operating finger-piece for said ward end of said trigger-beneath the pivot for the latter substantially asset forth,

ger, a laterally-swinging tri p'ping lever which with a vertically-movable tailpiece,and.mechger, a movable tripping device between saidengages and lifts the tailpiece ofsaid trip-' 5. The combination of the sears, a trig-- change-block which is located near the forvice to trip said-sears, and having a part vice engages and actnates one of said sears I ping device alternately into operative relablock carried bysaid trigger and provided the tripping device, said-block having a part tripping-lever laterally to carry its tailpiece sears, of an adjustable change-block carried 6. Thecombination-wit-h the sears ia trig I I v is pivoted on astationary part and is provided &

anism for movlng said tripping-lever to alternately place its tailpiece in operative relation to said sears, of an adjustable changeblock movable longitudinally on said trigger and provided with a part which in one. position of said change-block moves said tailpiece to operate said sears, and having a part which in another position of said change block actuates one of' said sears independ- IO ently of said tripping-lever; andan operating finger-piece for said change-block which is located adjacent to the forward end of the trigger beneath the pivot for the latter, substantially as set forth.

Witness my hand this 24th day of Feb'ru- I 5 ary, 1903.

GEORGE O. CLINE.

Witnesses:

JNo. J. BONNER, 4 CLAUDIA. M. BENTLEY.. 

